police in tahoe say she was last seen in a motel on the nevada side. the sheriff's department in douglas, nevada is now handling the investigation. >>> police have given us surveillance video of a suspect. live in the city with that video and the growing effort to find justice. >> reporter: julyy, the suspect in this case was faceless in the crowd until now. that's because the tenderloin is laced with surveillance cameras like that one. one of them captured an image place need your help to find. you are looking in slow motion at a man who moments before running into this surveillance camera robbed this woman, and killed her dog. >> the only way i can sleep is with her blanket. >> reporter: she is still too scared to show her face, or use her name. last friday, she pulled over in the gritty tenderloin district to find her phone. that's when a man robbed her, and threw the pekinese into oncoming traffic. >> if you would do something like this to you and her dog, i have a feeling you will do something again like this to someone else. >> reporter: he stopp